ARGUS-M NONDIRECT. OVERCURRENT RELAY CASE SIZE E8, 4 CT, 19 BINARY INP./ 16 BINARY OUTP. 8 LEDS + 6 KEYS MEASURING INPUT: 1/5A, 50/60HZ USB FRONT PORT, RS485 REAR PORT + REAR OPTICAL ETHERNET DUPLEX IEC 60870-5-103, MODBUS RTU AND DNP 3.0 (USER SELECTABLE SETTING) AND IEC 61850 PROTECTION FUNCTION: STANDARD VERSION PLUS AUTORECLOSE (79)